
The 2003 Oldsmobile Alero Owner Manual a 
Seats and Restraint  Systems ........................... 1-1 
Front  Seats 
............................................... 1-2 
Rear  Seats 
............................................... 1-8 
Safety  Belts 
.............................................. 1-9 
Child  Restraints 
....................................... 1-32 
Supplemental  Restraint  System  (SRS) 
...................................... 1-53 
Restraint  System  Check 
............................ 1-60 
Keys 
........................................................ 2-2 
Doors  and  Locks 
....................................... 2-7 
Windows 
................................................. 2-1 4 
Theft-Deterrent  Systems ............................ 2-1 6 
Starting  and  Operating  Your  Vehicle 
........... 2-17 
Mirrors 
.................................................... 2-32 
Siorage  Areas 
......................................... 2-34 
Sunroof .................................................. 2-35 
Instrument  Panel  Overview 
.......................... 3-4 
Climate  Controls 
...................................... 3-1  9 
.w .arning  Lights,  Gages  and  indicators ......... 3-23 
Audio System(s) ....................................... 3-38 
Features  and  Controls 
..................................... 2-1 
Instrument  Panel 
............................................. 3-1  Driving  Your  Vehicle 
....................................... 4-1 
Your  Driving, the  Road, and Your  Vehicle 
..... 4-2 
Towing 
................................................... 4-31 
Service 
..................................................... 5-3 
Fuel ......................................................... 5-5 
Checking Things  Under 
the 
Hood ............................................... 5-9 
Headlamp Aiming 
..................................... 5-47 
Bulb Replacement .................................... 5-49 
Windshield  Wiper Blade Replacement 
......... 5-52 
Tires 
...................................................... 5-53 
Appearance  Care 
..................................... 5-72 
Vehicle  Identification 
................................. 5-80 
Electrical System 
...................................... 5-81 
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Normal  Maintenance  Replacement Parts ...... 5-88 
Maintenance  Schedule ........................... ... 6-1 
Maintenance Schedule 
................................ 6-2 
Customer  Assistance  Information 
.................... 7-1 
Customer 
Assistance iniorrnation .................. 7-2 
Index ................................................................. 1 
Service 
and Appearance Care 
.......................... 5-1 
n.- - -:I: - -1: - .- - .....................  

Theft-Deterrent  Systems 
Vehicle theft is big business, especially in some cities. 
Although  your vehicle has  a  number of theft-deterrent 
features,  we  know that  nothing  we put  on it can  make 
it 
impossible to  steal. 
Passlock@ 
Your  vehicle has the Passlock@  theft-deterrent  system. 
Passlock@  is a passive  theft-deterrent  system. 
Passlock@  enables fuel 
if the ignition  lock  cylinder  has 
not  been tampered  with. 
During normal  operation,  the  SECURITY  light  will  go 
off 
approximately five seconds  after  the  ignition  key  is 
turned to 
ON and the  engine is started. 
After  attempting to  start  the  engine, 
if the  SECURITY 
light  flashes  or stays  on,  wait ten minutes  with  the  key  in 
ON until the  light goes off. Then  turn the  ignition  to 
OFF before attempting  to  start  the  engine  again. 
See 
Roadside  Assistance  Program  on page 7-5 for 
more  information. 
2-1 6  

3400 V6 Engine 
In  very  cold weather, 
0°F (-18°C) or colder,  the engine 
coolant  heater, 
if your  vehicle  has this feature,  can 
help.  You'll  get  easier  starting and better  fuel economy 
during  engine  warm-up.  Usually, the coolant heater 
should  be  plugged in  a  minimum  of four hours prior  to 
starting  your  vehicle.  At temperatures  above 
32°F (OOC), 
use  of the  coolant  heater  is not required. 
To  Use the  Engine Coolant Heater 
1. Turn off the engine. 
2.  Open  the hood  and unwrap  the  electrical cord. On 
the  2.2L  L4 
ECOTECTM engine,  the engine  coolant 
heater cord  is located in front  of the  coolant 
surge tank  on the passenger's  side 
of the engine 
compartment.  On the 
3400 V6 engine, the 
engine coolant heater  cord is located  near the 
engine air cleaner/filter.  See 
Engine Compartment 
Overview  on  page 
5-12 for more  information  on 
location. 
3. Plug it into  a normal,  grounded 1 IO-volt AC outlet. 
Plugging  the cord into an  ungrounded  ou' t 
could cause  an electrical  shock. Also, the 
wrong kind 
of extension  cord  could  overheat 
injured.  Plug the cord  into  a  properly  grounded 
three-prong 
11 0-volt AC outlet. If the  cord 
won't  reach, use  a heavy-duty  three-prong 
extension  cord rated  for at  least 
15 amps. 
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2-2 1  

Notice: If  your  vehicle  seems  to  start  up  rather 
slowly,  or  if 
it seems  not  to shift gears  as  you  go 
faster,  something  may  be  wrong  with  a  transaxle  system  sensor.  If  you  drive  very  far  that  way, your 
vehicle  can  be  damaged. 
So, if  this  happens, 
have  your  vehicle  serviced  right  away. Until  then, 
you  can  use  SECOND 
(2) when  you  are  driving 
less  than 
35 mph (55 kmh)  and  AUTOMATIC 
OVERDRIVE  (D) for  higher  speeds. 
THIRD 
(3): This position  is also used  for normal driving. 
However,  it offers more power and  lower fuel economy 
than  AUTOMATIC  OVERDRIVE  (D). Here are  some 
times you  might choose THIRD 
(3) instead  of 
AUTOMATIC OVERDRIVE (D): 
When driving on hilly, winding roads. 
When towing  a trailer, so there  is less shifting 
When  going down a steep  hill. 
between 
gears.  SECOND 
(2): This 
position  gives  you  more  power  but 
lower fuel  economy. 
You can  use  SECOND (2) on 
hills.  It can  help control  your  speed  as  you go down 
steep  mountain  roads,  but  then  you would  also  want  to 
use  your  brakes  off and  on. 
Notice: Don’t  drive  in  SECOND (2) for  more  than 
25 miles (40 km), or at  speeds  over 55 mph 
(90 km/h),  or  you  can  damage your  transaxle.  Use 
THIRD 
(3) or  AUTOMATIC  OVERDRIVE  (D)  as 
much  as  possible.  Don’t shift  into  SECOND 
(2) 
unless  you  are  going  slower  than 65 mph (105 kdh) 
or  you  can  damage  your  engine. 
FIRST 
(1): This  position  gives  you  even  more  power 
but  lower  fuel economy  than  SECOND 
(2). You  can use 
it on  very steep  hills, or in  deep  snow  or mud. If the 
shift lever is  put  in  FIRST 
(I), the transaxle  won’t  shift 
into  first  gear  until the vehicle is going  slowly  enough. 
Notice: If  your  front  wheels  won’t  turn,  don’t 
try  to  drive.  This  might  happen  if  you  were stuck 
in 
very  deep  sand  or  mud  or  were up against  a  solid 
object.  You  could  damage  your  transaxle.  Also, 
if  you  stop  when  going  uphill,  don’t  hold  your 
vehicle  there  with  only  the  accelerator  pedal. This 
could  overheat  and  damage the  transaxle.  Use your 
brakes  to  hold  your  vehicle 
in position  on  a hill. 
2-24  

Shift Speeds 
I 
If you  skip a gear  when  you downshift, you 
could lose control  of your  vehicle.  You could 
injure  yourself 
or others. Don’t shift  down 
more than one  gear  at a time when you 
downshift. 
Up-Shift  Light 
Parking Brake 
ii 
SHIFT 
If you have  a  manual 
transaxle,  you  may  have  a 
SHIFT  light located  on 
the instrument panel 
cluster.  This light will  show 
you  when  to shift to the 
next higher  gear for 
the  best  fuel economy. 
When  this light  comes  on,  you  can shift to the  next 
higher  gear 
if the weather,  road and traffic conditions 
permit. For  the best fuel  economy,  accelerate slowly  and 
shift  when  the  light  comes on.  Automatic  Transaxle  shown, 
Manual  Transaxle  similar 
To  set  the parking brake, pull  up  on  the  parking  brake 
handle. 
If the ignition  is  on, the brake  system  warning 
light will  come  on. 
Brake  System  Warning Light on 
page 
3-28. 
To  release  the parking  brake, hold the  regular  brake 
pedal  down.  Pull the parking  brake handle  up  until  you 
can  press  the release  button. 
Hold the  release  button 
in  as you  move  the brake  handle  all the  way  down. 
2-26  

Section 3 Instrument  Panel 
Instrument  Panel  Overview ............................... 3.4 
Hazard  Warning  Flashers 
.......... .............. 3.6 
Other  Warning  Devices 
................................... 3.6 
Horn 
............................................................. 3.6 
Tilt  Wheel 
..................................................... 3.7 
Turn  SignaVMultifunction  Lever 
......................... 3.7 
Exterior  Lamps 
............................................. 3.13 
Interior  Lamps 
.............................................. 3.16 
Accessory  Power  Outlets 
............................... 3.17 
Ashtrays  and  Cigarette Lighter 
........................ 3.18 
Climate  Controls 
........................................... -3-1  9 
Climate  Control  System 
................................. 3.19 
Outlet  Adjustment 
......................................... 3.22 
Warning  Lights,  Gages  and Indicators 
............. 3.23 
Instrument  Panel  Cluster 
................................ 3.24 
Speedometer  and  Odometer 
........................... 3.25 
Tachometer 
................................................. 3.25 
Safety  Belt  Reminder  Light 
............................. 3.26 
Air 
Eag Reauiness iighi 3-LW 
Charging  System  Light .................................. 3.27 
fi cln ................................ 
Up-Shift Light .............................. .......... 3-28 
Brake  System  Warning  Light 
........, .......... 3-28 
Anti-Lock  Brake  System 
Enhanced  Traction System 
Enhanced  Traction System 
Warning 
bight 
........................................ 3-29 
Warning  Light 
........................................... 3-29 
Active  Light 
.............................................. 3-30 
Engine  Coolant  Temperature  Gage 
.................. 3-31 
Low  Coolant  Warning  Light 
............................ 3-31 
Malfunction Indicator  Lamp 
............................. 3-31 
Oil  Pressure  Light 
......................................... 3-34 
Low  Oil  Level  Light 
....................................... 3-35 
Security  Light 
............................................... 3-36 
Cruise  Control  Light 
...................................... 3-36 
%??:ice ‘!ehic!n see!? Light ........................... ._ 2-36 
Fuel  Gage ................................................... 3-37 
Change  Engine 
Oil  Light 
................................ 3-35 
Low  Washer  Fluid Warning  Light 
..................... 3-36 
3- 
1  

Instrument Panel Cluster 
Your instrument panel cluster  is designed  to let  you  know  at  a  glance how  your  vehicle  is  running.  You’ll  know  how 
fast  you’re  going, how  much  fuel you’re  using, and  many other things you’ll  need to drive  safely  and  economically. 
Your  vehicle  has this cluster 
or one  very similar  to it. It includes indicator warning lights  and  gages  that  are  explained 
on  the  following pages.  Be sure to  read about them. 
PO 
RO 
NO 
DO 
30 
20 
United  States Automatic Transaxle  Cluster shown, Manual  Transaxle  and  Canada  Clusters  similar 
3-24  

Engine  Coolant  Temperature  Gage 
This gage shows the engine coolant 
temperature. 
if the  gage 
pointer moves into the  red 
area,  the  light comes 
on and you  hear  a  chime, 
your  engine 
is too hot. 
It  means  that  your engine 
coolant has overheated. 
See 
Engine  Overheating  on  page 5-26. 
Low Coolant  Warning  Light 
1 
This light comes on 
briefly  when you turn  your 
ignition  on. 
!f this !ight comes on and stays on and you hear a 
chime,  the coolant  level  in  your  vehicle  is low. 
See 
Engine  Coolant on page 5-23. If the  light  is on  along 
with an overheat  warning,  you  may  have a 
serious overheating problem.  See 
Engine Coolant 
Temperature  Gage on page 3-31 
listed previously. 
Notice: Damage to  your engine from  neglected 
coolant  problems  can be costly  and  is not  covered 
by  your  warranty. 
See 
Engine  Overheating  on  page  5-26 for  information 
on  what 
to do.  Your  vehicle should be serviced  as soon 
as  possible. 
Malfunction  Indicator  Lamp 
Service  Engine Soon  Light  in the 
United  States 
or Check Engine Light  in 
Canada 
17 
SERVICE 
ENGINE 
SOON 
II I I I 
United  States  Canada 
Your  vehicle is equipped  with  a  computer which 
monitors operation  of the fuel,  ignition  and emission 
control systems. 
3-3 1